Chicago vs Indiana Dunes National Park: which is better, month by month

Indiana Dunes National Park beats Chicago in 8 of 12 months — its lead peaks in December (63 vs 46) — while Chicago wins June, August and September; they are within 3 points in July.

Each place is scored under the lens that suits its type — they are different kinds of destination, so the scores are each place at its own best. Comfort is SeasonMap's 0–100 estimate from ERA5 climate normals, not a forecast.

Chicago

🇺🇸 United States · mild climate

Best month
September 91/100
Months won
3 of 12

Indiana Dunes National Park

🇺🇸 United States · mild climate

Best month
May 87/100
Months won
8 of 12

Chicago vs Indiana Dunes National Park — all 12 months

MonthChicagoIndiana Dunes National ParkWinnerGap
January40Ffreezing, a little rain, clean air55Dfreezing, a little rain, clean airIndiana Dunes National Park15
February49Ffreezing, a little rain, clean air61Cfreezing, a little rain, clean airIndiana Dunes National Park12
March64Ccold, a little rain, clean air70Bcold, rainy, clean airIndiana Dunes National Park6
April71Bcool, rainy, clean air79Bcold, rainy, clean airIndiana Dunes National Park8
May83Anice, rainy, muggy air87Anice, rainy, muggy airIndiana Dunes National Park4
June86Awarm, rainy81Awarm, rainy, muggy airChicago5
July76Bhot, rainy, muggy air73Bhot, rainy, muggy airTie3
August81Ahot, a little rain76Bhot, rainy, muggy airChicago5
September91Swarm, a little rain, clean air84Awarm, a little rain, clean airChicago7
October73Bnice, rainy, clean air80Acool, rainy, clean airIndiana Dunes National Park7
November62Ccold, a little rain, clean air72Bcold, a little rain, clean airIndiana Dunes National Park10
December46Fcold, a little rain, clean air63Cfreezing, a little rain, clean airIndiana Dunes National Park17

A month is a tie when the two are within 3 points. The widest gap is December (46 vs 63). Tap a month for that month's temperature, rain, humidity and air quality side by side.